Albert bruno



UNITED STATES PATENT OFFICE.

ALBERT BRUNO, OF MEUDON, FRANCE.

PROCESS OF PROTECTING FABRICS ANT) PAGKINGS, SUCH AS BAGS, AGAINST CHEMICAL CORROSIVE ACTION.

.No Drawing.

. To all whom it may concern:

Be it known that I, ALBERT BRUNO, a citizen of the French Republic, and residing at No. 50 Rue 'des Ruisseaux, Meudon, Seineet-Oise, France, have invented certain new and useful Improvements in the Process of.

Protecting Fabrics and Packings, such as Bags, Against Chemical Corrosive Action, of which the following is a specification.

Bags made of woven fabric are universally used for transporting various materials, and it often happens that such bags are quickly damaged and rendered useless, sometimes after having been used only once, when they have contained materials that are corrosive or that become corrosive by the action of moist air, especially in cases where these bags are used for transporting materials such as fertilizers having an acld reaction, superphosphates, sulfur, &c.

The present invention has for its object to provide an improved process designed to insure protection of all packings, and more particularly bags made of woven fabrics, against the corrosive action of the materials they contain.

The improved process is applicable both to the primary material used for making such bags or packings, at the time of spinning or weaving the fibers and to the finished packings and bags.

The improved process consists essentially in depositing upon the fibers to be protected, a mineral or organic substance, or a composition that contains both mineral and organic substances, and which satisfies the following two conditions, namely, (1) it must not be injurious at the time of use, and (2) it must become protective immediately it is subjected to the action of the corrosive 1 material against which it is int ford protection.

The choice of the substances and their proportions of use will vary according to the nature of the materials to be packed, and according to the circumstances of weather and place.

One manner of carrying the improved process into effect will now be described by way of example.

The bags are immersed in a bath composed of a gelatinous liquor derived from the treatment of green bones or the bodies of animals, in which finely powdered chalk is stirred.

ended to af- Serial N0. 263,537.

1 from adhering to one another the bags may be sprinkled with finely powdered chalk.

The protective composition with which the bags are to be impregnated may also consist of carbonate of lime stirred in a glutinous alkaline bath, such as aluminate of soda, basic alum, a decoction of seaweed Patented Feb. 1, 1921. I

(marine algae) in water rendered alkaline, v

a neutral bath of pectic substances, starch paste, fecula, dextrin. ,For the purpose of protecting the bags from mold, any suitable antiseptic agent,

such as phenolic, cresylic or cupric products, may be added to the above specified composition.

This protective coating composition "may be applied to the fibers before the latter are woven, or to the fibers before the are made up into bags, or to the finished bags. application; of this coating composition may be repeated after the bags have been used, for the purpose of prolonging their life.

This invention is applicable to bags and packings of all kinds, new and used, of all shapes and'all sizes.

The

Having now described my invention, what I claim as new and desire to secure by Letters Patent is 1. A process for the protection of fabrics and packages, such as bags, against the corrosive chemical action of their contents, consisting in applying to the fibers to be protected a mineral, non-corrosive substance capable of entering into reaction with the corrosive chemical substance disengaged by the substances contacting with the fabric in such manner as to neutralize it, and an organic colloid agglutinant diluted in water which is intended to assure the adherence of said mineral substance to the fabric.

2. A process for the protection of fabrics and packages, such as bags, against the corrosive chemical action of their contents, consisting in applying to the fibers to be protected finely ground chalk and a colloid agglutinant diluted in water and intended to assure the adherence of said chalk to the fabric.

3. A process for the protection of fabrics and packages, such as bags, against the corrosive chemical action of their contents, consisting in applying to the fibers to be protected finely ground chalk and a colloid substance diluted in water, and treating same with a substance to render the colloid substance insoluble.

4. A process for the protection of fabrics and packages, such as bags, against the corrosive chemical action of their contents, consisting in applying to the fibers to be protected finely ground chalk and a vegetable colloid substance, such as that produced from seaweed, diluted in water rendered alkaline.

5. A fabric for the production of bags intended particularlyto contain corrosive substances, whose fibers are impregnated with a non-corrosive mineral substance ca pable of entering into reaction with the corrosive chemical substance disengaged by the substances in contact with the fabric. so as to neutralize it, mixed with an organic colloid agglutinant intended to assure the ad herence of said mineral substance to the fabric. v

6. A fabric for the production of bags especially intended to contain corrosive materials, whose fibers are impregnated with finely ground chalk and a colloid agglutinant substance.

7. A bag intended more particularly to contain corrosive materials formed of a fabric the fibers of which are impregnated with finely ground chalk and a colloid agglutinant substance.

8. A fabric for the manufacture of bags intended more particularly to contain corrosive materials, whose fibers are impregnated with finely ground chalk and a vegetable colloid material rendered'alkaline.

9. A bag intended more particularly to contain corrosive materials formed of a fabric the fibers of which are impregnated with finely ground chalk and a vegetable agglutinant rendered alkaline.

In testimony whereof I have signed my name to this specification.

ALBERT BRUNO. 

